Ah, OK, it clicked when I scrolled down a bit further and saw the part "animated flats and textures from Doom":
flat BLOOD1 range BLOOD3 tics 8
So in my case I jus changed "x_001" to "FLOOR8_1". Dur !
All that's left now is the switches; they are working except for the sound which is always default switch sound. If I type in the name of a sound that doesn't exist - just to see what happens - there are no errors and the default switch sound still plays. I therefore guess I'm not typing in a recognised sound. The wiki links to
https://zdoom.org/wiki/SNDINFO but sadly this doesn't list the available sounds. So I opened up the gzdoon.pk3 and looked at its sndinfo . In there is a line:
world/spark1 spark1
So, I tried specifying "spark1" as the sound, then "world/spark1", but in both cases I get the default switch sound. So, just how am I supposed to specify a sound ?
TTFN,
Jon